RemoveMark takes the watermark off videos created with Sora 2. You paste the link to a Sora video into the tool, it processes the clip and you receive a clean version within seconds.
It works in the browser, so there is nothing to install. The process has three simple steps and the site offers it free to start. As with any watermark tool, make sure you have the right to use the video without its original marking before sharing it publicly.